Pneumatic control means for a vehicle heat exchanger system or t

Details Pneumatic control means for a vehicle heat exchanger system or t Pneumatic control means for a vehicle heat exchanger system or t

1980-07-21

1981-12-29

Tapolcai, Jr., William E.

Automatic temperature and humidity regulation

Motors

Fluid-operated

91387, G05D 2308

Patent

active

043078362

ABSTRACT:
A thermostat construction having a valve unit for directing a pneumatic signal to a pneumatically operated control device in relation to the force differential between the temperature sensed by the temperature sensing unit thereof and the temperature setting of a temperature setting unit thereof, a lever being pivotally mounted to the construction and being operatively interconnected to the valve unit at a first portion of the lever and to the temperature setting unit and the temperature sensing unit at a second portion of the lever. A pneumatically operated positioning construction having a valve unit for directing a pneumatic signal to a positioning chamber thereof in relation to the force differential between a pneumatically operated setting unit thereof and a feedback unit of the positioning chamber, a lever being pivotally mounted to the construction and being operatively interconnected to the valve unit at a first portion of the lever and to the setting unit and the feedback unit at a second portion of the lever.

REFERENCES:
patent: 2575085 (1951-11-01), Alyea
patent: 2827020 (1958-03-01), Cook
patent: 3251274 (1966-05-01), Jensen
patent: 3263925 (1966-08-01), Joesting
patent: 3580502 (1971-05-01), Duchek
patent: 3915062 (1975-10-01), Westfall et al.
patent: 4151953 (1979-05-01), Sugiura
patent: 4178837 (1979-12-01), Frankenberg
patent: 4192453 (1980-03-01), Frankenberg

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